CN103117786B - A kind of antenna array calibration method and system - Google Patents
A kind of antenna array calibration method and system Download PDFInfo
- Publication number
- CN103117786B CN103117786B CN201310019901.0A CN201310019901A CN103117786B CN 103117786 B CN103117786 B CN 103117786B CN 201310019901 A CN201310019901 A CN 201310019901A CN 103117786 B CN103117786 B CN 103117786B
- Authority
- CN
- China
- Prior art keywords
- calibrating sequence
- radio frames
- average power
- power content
- calibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The embodiment of the invention discloses a kind of antenna array calibration method and system, to solve the problem of data distortion in background technology.Described method comprises: receive the calibration information from DSP in the first radio frames, calibration information comprises the average power content of calibrating sequence, the symbolic number at known calibrating sequence place and known calibration enable signal; The average power content of calibrating sequence is calculated according to the total data of known calibrating sequence by DSP; According to symbolic number and the known calibration enable signal at known calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence searched is adopted to the calibrating sequence average power content received, compare with known target gain; Carry out gain-adjusted according to comparative result, complete antenna array calibration.The embodiment of the present invention improves the precision of calibrating sequence average power content, the distortion situation avoiding data and the impact caused calibrating sequence after introducing compression algorithm.
Description
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to a kind of antenna array calibration method and system.
Background technology
Existing antenna array calibration method; at down direction; by Digital Signal Processing (Digital SignalProcessing; DSP) calibrating sequence is inserted downgoing baseband data protection time slot (ProtectPeriod by unit; GP) position; issue the field programmable gate array (Field-Programmable Gate Array, FPGA) of Base Band Unit equipment (Base band Unit, BBU) again.At up direction, calibrating signal and working signal, by switching over, are closed road, then are given RRU-FPGA by Remote Radio Unit (Radio Remote Unit, RRU).Therefore, for BBU-FPGA and RRU-FPGA, working signal and calibrating signal Hun Wei mono-tunnel, all according to identical flow processing.And the loopback of calibrating sequence, through whole uplink and downlink link, respectively carries out once complete compression process.
When carrying out data compression, at down direction, calibrating sequence is placed in a symbol of GP, can compresses normally, decompress(ion).But at up direction, because upstream terminal signal is that 20us delivers to antenna opening in advance, the therefore reference frame head of up link descending 20us in advance, the time point dividing symbol also shifts to an earlier date 20us.Fig. 1 is the sequential chart of calibrating sequence, and the part of drawing oblique line represents calibration data.Calibration data be looped back to up after, be assigned in 2 symbols.Wherein account for rear 1578 Ts(sampled points in symbol (n+1)), symbol (n+2) accounts for front 502 Ts.For symbol (n+1), because front 614 sampled points are all make an uproar at the end now, the average gain therefore calculated is very low, and the data of whole symbol need to produce larger gain by shifting left.When the power of actual alignment sequence and low noise differ greatly, data are shifted left and will be overflowed, and cause expendable distortion.The calibration data of symbol (n+2) also can be affected, just because invalid data in front 1/4 symbol lacks, relatively so the actual power difference of the average power calculated and calibrating sequence is little.
DSP moves the position of descending slotting calibrating sequence, is shifted to an earlier date 20us, up automatic growth control (Automatic Gain Control, AGC) can be avoided to process the situation of distortion, but the AGC in descending compression process can make mistakes again.As shown in Figure 2.
In sum, the algorithm impact by compression of existing antenna array calibration method, descending reference frame head differs 20us with up with reference to frame head, and DSP can only insert calibrating sequence using the frame head in one of them direction as reference time, so just cause calibrating sequence must not mate with the frame head of other direction, the accuracy of the average power content of the calibrating sequence calculated is not high, regulates afterwards make data occur the situation of distortion through AGC.
Summary of the invention
The embodiment of the present invention discloses a kind of antenna array calibration method and system, to solve the problem of data distortion in background technology.
In order to solve the problem, the embodiment of the invention discloses a kind of antenna array calibration method, comprising:
Receive the calibration information from digital signal processing unit in the first radio frames, wherein, described calibration information comprises: the average power content of calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal; The average power content of described calibrating sequence is calculated by the total data of digital signal processing unit according to known described calibrating sequence;
According to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain;
Carry out gain-adjusted according to comparative result, complete antenna array calibration.
Preferably, described first radio frames is connected with described second radio frames, and described first radio frames is before described second radio frames.
Preferably, also comprise: in the second radio frames, known described calibrating sequence is inserted in normal data.
Preferably, describedly in the second radio frames, known described calibrating sequence is inserted in normal data, comprises:
Known described calibrating sequence is inserted in two adjacent symbols in the second radio frames;
Wherein, when protecting time slot to be greater than a symbol, described calibrating sequence is inserted into 2 adjacent symbols of protection time slot, and when protecting time slot to equal a symbol, described calibrating sequence is inserted into last 1 symbol of descending pilot frequency time slot and 1 symbol of protection time slot.
Preferably, described foundation comparative result carries out gain-adjusted, comprising:
According to the amplitude that the average power content calculated gains of described calibrating sequence regulates;
When the average power content of described calibrating sequence is greater than target gain, reduce the amplitude of total data;
When the average power content of described calibrating sequence is less than target gain, increase the amplitude of total data.
The embodiment of the invention also discloses a kind of antenna array calibration system, comprising:
Digital signal processing unit, for calculating the average power content of described calibrating sequence according to the total data of known calibrating sequence;
BBU-FPGA unit, for receiving the calibration information from described digital signal processing unit in the first radio frames, wherein, described calibration information comprises: the average power content of described calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal; According to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain; Carry out gain-adjusted according to comparative result, complete antenna array calibration.
Preferably, described first radio frames is connected with described second radio frames, and described first radio frames is before described second radio frames.
Preferably, described digital signal processing unit, also for being inserted in normal data by known described calibrating sequence in the second radio frames.
Preferably, known described calibrating sequence to be inserted in two adjacent symbols in the second radio frames by described digital signal processing unit;
Wherein, when protecting time slot to be greater than a symbol; described calibrating sequence is inserted into 2 adjacent symbols of protection time slot by described digital signal processing unit; when protecting time slot to equal a symbol, described calibrating sequence is inserted into last 1 symbol of descending pilot frequency time slot and 1 symbol of protection time slot by described digital signal processing unit.
Preferably, the amplitude that regulates according to the average power content calculated gains of described calibrating sequence of described BBU-FPGA unit;
When the average power content of described calibrating sequence is greater than target gain, described BBU-FPGA unit reduces the amplitude of total data;
When the average power content of described calibrating sequence is less than target gain, described BBU-FPGA unit increases the amplitude of total data.
Compared with background technology, the embodiment of the present invention comprises following advantage:
First, utilize the total data of calibrating sequence to carry out calculating the average power content of calibrating sequence, and only get compared with average power content that the partial data in calibrating sequence calculates in background technology, improve the precision of calibrating sequence average power content.
Secondly, average power content and the target gain of the calibrating sequence improved according to precision compare, and the comparative result obtained is also correspondingly more accurate.
Again, carry out gain-adjusted according to comparative result more accurately, avoid the distortion situation of data.
Further, with easy method, avoid after introducing compression algorithm and calibrating sequence is impacted.
Accompanying drawing explanation
Fig. 1 is the calibrating sequence time diagram in background technology;
Fig. 2 is the calibrating sequence time diagram in background technology;
Fig. 3 is sending alignment structural representation in the specific embodiment of the invention;
Fig. 4 is close alignment structural representation in the specific embodiment of the invention;
Fig. 5 is the structural principle schematic diagram of IR interface data compression in the specific embodiment of the invention;
Fig. 6 is a kind of antenna array calibration method flow diagram in the embodiment of the present invention;
Fig. 7 is a kind of antenna array calibration method flow diagram in the embodiment of the present invention;
Fig. 8 is a kind of antenna array calibration system construction drawing in the embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
At timesharing Long Term Evolution (Time Division Long Term Evolution, TD-LTE) in system, in order to reduce the co-channel interference of terminal room, and increasing throughput and the coverage of Cell Edge User, usually introducing multi-antenna beam figuration technology in base station side.Because aerial array is affected by environment, when existing, become error, so real time calibration must be carried out to each antenna, compensation magnitude and phase error by antenna array calibration (being called for short AC calibration), thus ensure correctness and the reliability of figuration.
LTE AC calibration specifically can comprise sending alignment and close alignment two parts.
(1) major function of sending alignment is calibrated the amplitude of antenna sending direction and phase place.The DSP of BBU, after receiving high-rise triggering signaling, inserts calibrating sequence in the position of each passage GP, through BBU-FPGA, RRU, is sent by radio-frequency channel, closes behind road, then be looped back to RRU by calibrated channel through mixer.The data of calibrating sequence and antenna are combined into a road by radio-frequency (RF) switch by RRU.DSP, from reception extracting data calibrating sequence, calculates the valuation of sequential channel and frequency domain channel, obtains the antenna factor of each passage.Concrete sending alignment structure as shown in Figure 3.
(2) major function of close alignment is calibrated the amplitude of antenna receive direction and phase place.Close alignment is similar to the flow process of sending alignment, and just calibrating sequence is only inserted in the position (specifically which root is determined by RRU hardware) of an antenna GP, is sent, through shunt, then by radio-frequency channel loopback by calibrated channel.Concrete close alignment structure as shown in Figure 4.
Sending alignment is identical with the transmitting time of the calibrating sequence of close alignment, all at the GP time slot of special subframe.Because LTE system is to the mode of special subframe employing flexible configuration, GP slot length has multiple possibility, and the shortest time slot is 1 symbol(symbol only) length.For adapting to different ratio, the length of regulation calibrating sequence is the number of data points of a symbol, for 20M bandwidth, and 2048 sampled points.Consider that time delay is protected again, before calibrating sequence, add 32 Cyclic Prefix (Cyclic Prefix, CP).Therefore the calibrating sequence length of 20M bandwidth is 2080 sampled points, close to a symbol lengths.The subsequent content of the embodiment of the present invention is all described for 20M bandwidth.
By Fiber connection between RRU and BBU, the interface between LTE-IR(RRU and BBU is followed in the transmission of data) interface protocol standard.Agreement specifies that the maximum bit wide of I Q data transmitted be 16bit(actual effectively transmission bit wide is 15bit, and the data of minimum bit are lost, with remaining go out certain space for the transmission of control word).Accordingly, LTE-IR interface data compression algorithm propose by the I of 16bit Q data compression be 7bit transmission (without the need to losing bit0), volume of transmitted data is reduced by half, thus reaches the object of saving half fiber resource.
IR interface data compression algorithm specifically can be divided into 4 steps:
1. AGC process: in units of symbol, gets the sampling number of front 1/4 symbol of every root antenna according to calculating average power, and according to average power and the difference expecting power, by the data point reuse of whole symbol to expectation power.
2. compress: adopt the A optimized to lead compression algorithm, realize the compression of base band data by 15bit to 7bit.
3. decompress: the inverse process being compression, the algorithm of employing depends on compression algorithm.
4. AGC process is separated: the inverse process being AGC process.
Wherein, AGC process and compression process complete at transmitting terminal, up in RRU-FPGA, descending in BBU-FPGA; Decompress and separate AGC process and complete at receiving terminal, up in BBU-FPGA, descending in RRU-FPGA.Fig. 5 is the structure principle chart of IR interface data compression.
A kind of antenna array calibration method and system disclosed by the invention is introduced in detail below by enumerating several specific embodiment.
Embodiment one
Introduce a kind of antenna array calibration method disclosed in the embodiment of the present invention in detail.
With reference to Fig. 6, show a kind of antenna array calibration method flow diagram in the embodiment of the present invention.
Step 100, receives the calibration information from digital signal processing unit in the first radio frames.
Wherein, described calibration information specifically can comprise: the average power content of calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal.
The average power content of described calibrating sequence can be calculated by the total data of digital signal processing unit according to known described calibrating sequence.Particularly, after DSP receives high-rise calibration triggering signal, all data (totally 2080 sampled points) of getting calibrating sequence calculate average power content.Because calibrating sequence is known, so average power content can be calculated in advance.
Wherein, the total data of described calibrating sequence refers to the data of 2080 all sampled points.
DSP by configuration interface, puies forward previous radio frames after calculating the average power content of calibrating sequence, and the average power content of calibrating sequence, calibrating sequence place symbolic number, calibration enable signal are sent to BBU-FPGA.
Step 102, according to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain.
Wherein, the symbolic number at the average power content of calibrating sequence, calibrating sequence place and calibration enable signal send by the first radio frames in step 100.The calibrating sequence of correspondence sends by the second radio frames in step 102.
Step 104, carries out gain-adjusted according to comparative result, completes antenna array calibration.
Described step 104 can be particularly:
Carry out gain-adjusted and data compression according to comparative result, by optical fiber, data are sent to RRU, then are looped back to RRU up link, BBU-FPGA through He Luqi splitter, finally send DSP back to and complete antenna array calibration.
In sum, a kind of antenna array calibration method disclosed in the embodiment of the present invention, compared with background technology, has the following advantages:
First, utilize the total data of calibrating sequence to carry out calculating the average power content of calibrating sequence, and only get compared with average power content that the partial data in calibrating sequence calculates in background technology, improve the precision of calibrating sequence average power content.
Secondly, average power content and the target gain of the calibrating sequence improved according to precision compare, and the comparative result obtained is also correspondingly more accurate.
Again, carry out gain-adjusted according to comparative result more accurately, avoid the distortion situation of data.
Further, with easy method, avoid after introducing compression algorithm and calibrating sequence is impacted.
Embodiment two
Introduce a kind of antenna array calibration method disclosed in the embodiment of the present invention in detail.
With reference to Fig. 7, show a kind of antenna array calibration method flow diagram in the embodiment of the present invention.
Step 200, receives the calibration information from digital signal processing unit in the first radio frames.
Wherein, described calibration information specifically can comprise: the average power content of calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal.
The average power content of described calibrating sequence is calculated by the total data of digital signal processing unit according to known described calibrating sequence.
Step 202, is inserted into known described calibrating sequence in normal data in the second radio frames.
Described first radio frames is connected with described second radio frames, and described first radio frames is before described second radio frames.
The symbolic number at the average power content of calibrating sequence, calibrating sequence place and calibration enable signal send by the first radio frames.The calibrating sequence of correspondence sends by the second radio frames.
Described step 202, specifically can comprise:
Known described calibrating sequence is inserted in two adjacent symbols in the second radio frames.The calibrating sequence of front 20us is placed on the position of the rear 20us of first symbol, and remaining calibrating sequence is placed on the front end of the 2nd symbol.
Wherein, when protecting time slot to be greater than a symbol, described calibrating sequence is inserted into adjacent 2 symbols of protection time slot, and when protecting time slot to equal a symbol, described calibrating sequence is inserted into last 1 symbol of descending pilot frequency time slot and 1 symbol of protection time slot.
Step 204, according to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain.
Step 206, carries out gain-adjusted according to comparative result, completes antenna array calibration.
Described step 206, specifically can comprise:
According to the amplitude that the average power content calculated gains of described calibrating sequence regulates.
When the average power content of described calibrating sequence is greater than target gain, reduce the amplitude of total data.
When the average power content of described calibrating sequence is less than target gain, increase the amplitude of total data.
In embodiments of the present invention, the time point that calibrating sequence sends shifts to an earlier date descending reference frame head 20us, just causes with up reference frame is first when being therefore looped back to up, so do not need when carrying out data compression to distinguish normal data, calibration data, unification processes.
And GP is only had to the configuration of 1 symbol, calibrating sequence can take the duration of 20us after last symbol of descending pilot frequency time slot.Considering that the service condition of this configuration is few, and calibrate and just do once for general 1 hour, is therefore acceptable on the impact of calibrating.
In sum, a kind of antenna array calibration method disclosed in the embodiment of the present invention, compared with background technology, has the following advantages:
First, utilize the total data of calibrating sequence to carry out calculating the average power content of calibrating sequence, and only get compared with average power content that the partial data in calibrating sequence calculates in background technology, improve the precision of calibrating sequence average power content.
Secondly, average power content and the target gain of the calibrating sequence improved according to precision compare, and the comparative result obtained is also correspondingly more accurate.
Again, carry out gain-adjusted according to comparative result more accurately, avoid the distortion situation of data.
Further, with easy method, avoid after introducing compression algorithm and calibrating sequence is impacted.
Embodiment three
Introduce a kind of antenna array calibration system disclosed in the embodiment of the present invention in detail.
With reference to Fig. 8, show a kind of antenna array calibration system construction drawing in the embodiment of the present invention.
Described a kind of antenna array calibration system, specifically can comprise:
Digital signal processing unit 30, and, BBU-FPGA unit 32.
Introduce the relation between the function of each unit and each unit below respectively in detail.
Digital signal processing unit 30, for calculating the average power content of described calibrating sequence according to the total data of known calibrating sequence.
Described digital signal processing unit 30, also for being inserted in normal data by known described calibrating sequence in the second radio frames.
Particularly, known described calibrating sequence to be inserted in two adjacent symbols in the second radio frames by described digital signal processing unit 30.
Wherein, when protecting time slot to be greater than a symbol; described calibrating sequence is inserted into 2 adjacent symbols of protection time slot by described digital signal processing unit 30; when protecting time slot to equal a symbol, described calibrating sequence is inserted into last 1 symbol of descending pilot frequency time slot and 1 symbol of protection time slot by described digital signal processing unit 30.
BBU-FPGA unit 32, for receiving the calibration information from described digital signal processing unit in the first radio frames, wherein, described calibration information comprises: the average power content of described calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal; According to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain; Carry out gain-adjusted according to comparative result, complete antenna array calibration.
Described first radio frames is connected with described second radio frames, and described first radio frames is before described second radio frames.
The amplitude that described BBU-FPGA unit 32 regulates according to the average power content calculated gains of described calibrating sequence.
When the average power content of described calibrating sequence is greater than target gain, described BBU-FPGA unit 32 reduces the amplitude of total data.
When the average power content of described calibrating sequence is less than target gain, described BBU-FPGA unit 32 increases the amplitude of total data.
In sum, a kind of antenna array calibration system disclosed in the embodiment of the present invention, compared with background technology, has the following advantages:
First, utilize the total data of calibrating sequence to carry out calculating the average power content of calibrating sequence, and only get compared with average power content that the partial data in calibrating sequence calculates in background technology, improve the precision of calibrating sequence average power content.
Secondly, average power content and the target gain of the calibrating sequence improved according to precision compare, and the comparative result obtained is also correspondingly more accurate.
Again, carry out gain-adjusted according to comparative result more accurately, avoid the distortion situation of data.
Further, in the antenna array calibration system of routine, owing to have employed LTE-IR interface bit data compression algorithm, so calibration system cannot normally work.A kind of antenna array calibration system in the embodiment of the present invention, with easy method, avoids after introducing compression algorithm and impacts calibrating sequence.
For system embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above to a kind of antenna array calibration method and system disclosed in the embodiment of the present invention, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. an antenna array calibration method, is characterized in that, comprising:
Receive the calibration information from digital signal processing unit in the first radio frames, wherein, described calibration information comprises: the average power content of calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal; The average power content of described calibrating sequence is calculated by the total data of digital signal processing unit according to known described calibrating sequence;
In the second radio frames, known described calibrating sequence is inserted in normal data;
According to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain;
Carry out gain-adjusted according to comparative result, complete antenna array calibration.
2. method according to claim 1, is characterized in that,
Described first radio frames is connected with described second radio frames, and described first radio frames is before described second radio frames.
3. method according to claim 1, is characterized in that, is describedly inserted in normal data in the second radio frames by known described calibrating sequence, comprising:
Known described calibrating sequence is inserted in two adjacent symbols in the second radio frames;
Wherein, when protecting time slot to be greater than a symbol, described calibrating sequence is inserted into 2 adjacent symbols of protection time slot, and when protecting time slot to equal a symbol, described calibrating sequence is inserted into last 1 symbol of descending pilot frequency time slot and 1 symbol of protection time slot.
4. method according to claim 1, is characterized in that, described foundation comparative result carries out gain-adjusted, comprising:
According to the amplitude that the average power content calculated gains of described calibrating sequence regulates;
When the average power content of described calibrating sequence is greater than target gain, reduce the amplitude of total data;
When the average power content of described calibrating sequence is less than target gain, increase the amplitude of total data.
5. an antenna array calibration system, is characterized in that, comprising:
Digital signal processing unit, for calculating the average power content of described calibrating sequence according to the total data of known calibrating sequence;
Described digital signal processing unit, also for being inserted in normal data in the second radio frames by known described calibrating sequence;
BBU-FPGA unit, for receiving the calibration information from described digital signal processing unit in the first radio frames, wherein, described calibration information comprises: the average power content of described calibrating sequence, the symbolic number at known described calibrating sequence place and known calibration enable signal; According to symbolic number and the known described calibration enable signal at known described calibrating sequence place, at the second radio frames search calibrating sequence, and the calibrating sequence average power content received described in the calibrating sequence searched is adopted, compare with known target gain; Carry out gain-adjusted according to comparative result, complete antenna array calibration.
6. system according to claim 5, is characterized in that,
Described first radio frames is connected with described second radio frames, and described first radio frames is before described second radio frames.
7. system according to claim 5, is characterized in that,
Known described calibrating sequence to be inserted in two adjacent symbols in the second radio frames by described digital signal processing unit;
Wherein, when protecting time slot to be greater than a symbol; described calibrating sequence is inserted into 2 adjacent symbols of protection time slot by described digital signal processing unit; when protecting time slot to equal a symbol, described calibrating sequence is inserted into last 1 symbol of descending pilot frequency time slot and 1 symbol of protection time slot by described digital signal processing unit.
8. system according to claim 5, is characterized in that,
The amplitude that described BBU-FPGA unit regulates according to the average power content calculated gains of described calibrating sequence;
When the average power content of described calibrating sequence is greater than target gain, described BBU-FPGA unit reduces the amplitude of total data;
When the average power content of described calibrating sequence is less than target gain, described BBU-FPGA unit increases the amplitude of total data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019901.0A CN103117786B (en) | 2013-01-18 | 2013-01-18 | A kind of antenna array calibration method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019901.0A CN103117786B (en) | 2013-01-18 | 2013-01-18 | A kind of antenna array calibration method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103117786A CN103117786A (en) | 2013-05-22 |
| CN103117786B true CN103117786B (en) | 2015-10-07 |
Family
ID=48416069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310019901.0A Active CN103117786B (en) | 2013-01-18 | 2013-01-18 | A kind of antenna array calibration method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103117786B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007106B (en) * | 2015-06-15 | 2019-03-12 | 大唐移动通信设备有限公司 | A kind of compression method, BBU and its distributed base station system |
| CN107689842A (en) * | 2016-08-05 | 2018-02-13 | 北京信威通信技术股份有限公司 | A kind of method and device of calibration data |
| CN113055058B (en) * | 2019-12-27 | 2023-09-08 | 中兴通讯股份有限公司 | Base station, multi-antenna receiving and transmitting device and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446000A (en) * | 2002-12-25 | 2003-10-01 | 大唐移动通信设备有限公司 | Method for adjusting intelligences antenna array system in real time |
| CN102035076A (en) * | 2009-09-29 | 2011-04-27 | 大唐移动通信设备有限公司 | Antenna calibration system and method |
| CN102315868A (en) * | 2010-07-08 | 2012-01-11 | 中兴通讯股份有限公司 | Method and system for calibrating antenna of distributed base station |
| CN102870277A (en) * | 2010-03-31 | 2013-01-09 | 尤比戴尼有限公司 | Active antenna array and method for calibration of the active antenna array |
-
2013
- 2013-01-18 CN CN201310019901.0A patent/CN103117786B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446000A (en) * | 2002-12-25 | 2003-10-01 | 大唐移动通信设备有限公司 | Method for adjusting intelligences antenna array system in real time |
| CN102035076A (en) * | 2009-09-29 | 2011-04-27 | 大唐移动通信设备有限公司 | Antenna calibration system and method |
| CN102870277A (en) * | 2010-03-31 | 2013-01-09 | 尤比戴尼有限公司 | Active antenna array and method for calibration of the active antenna array |
| CN102315868A (en) * | 2010-07-08 | 2012-01-11 | 中兴通讯股份有限公司 | Method and system for calibrating antenna of distributed base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103117786A (en) | 2013-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102035611B (en) | Remote radio unit multi-antenna real-time calibration system and method | |
| CN105656815B (en) | A kind of bearing calibration of radio-frequency channel and device | |
| US11444809B2 (en) | Uplink signal combiners for mobile radio signal distribution systems using ethernet data networks | |
| CN109479296B (en) | Information transmission method, access network equipment and terminal equipment | |
| EP2787646A1 (en) | Method and device for compressing in-phase quadrature data | |
| CN107517503B (en) | Processing device, BBU, RRU and antenna correction method | |
| CN104467938B (en) | Selection diversity receives the method and system of merging patterns | |
| US10742255B2 (en) | Data compression method and device | |
| CN103117786B (en) | A kind of antenna array calibration method and system | |
| CN107809291A (en) | A kind of TDD and FDD LTE RRU general standing-wave ratio detecting method | |
| CN105262528B (en) | The 4 antenna emission diversity methods based on weight fraction Fourier transformation field | |
| CN103167598B (en) | A kind of remote communication method and device | |
| EP3364675A1 (en) | Method and device for processing discovery message | |
| CN105101482A (en) | Base station system and signal processing method thereof | |
| CN107408969B (en) | Antenna mode selection method, device and system | |
| EP3352384A1 (en) | Data sending and receiving method, apparatus and system | |
| CN108400802B (en) | Bluetooth receiving method, system and electronic equipment | |
| CN102821069B (en) | Base station and uplink data compression method on base station side | |
| WO2017063497A1 (en) | Signal channel correction compensation method, apparatus and system | |
| CN100531002C (en) | Method for sending information and method and apparatus for receiving information | |
| CN110311724B (en) | Digital front end, physical layer structure and terminal based on software definition | |
| CN104053244A (en) | Random access method | |
| CN103702363A (en) | Method for compressing signals from frequencies and downlink signal compressing system | |
| CN111586868A (en) | TD-LTE system radio frequency power amplifier and low noise amplifier protection method | |
| CN102547821B (en) | A kind of descending coverage prediction method of theaomni-directional transmission directional reception site type and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |